Answer:
Q1 = -2 (x^2 + 1)
Q2 = b^2(5b - 4)
Step-by-step explanation:
Q1)
(6x^2 + 3) - (5 + 8x^2)
= 6x^2 + 3 - 5 - 8x^2
= -2x^2 - 2
Take common,
= -2 (x^2 + 1)
Q2)
(2b^3 - 7b^2) + (3b^2 + 3b^3)
= 2b^3 - 7b^2 + 3b^2 + 3b^3
= 2b^3 + 3b^3 - 7b^2 + 3b^2
= 5b^3 - 4b^2
= b^2(5b - 4)
